Skip tests for srtree, see #7574

Signed-off-by: Mihai Maruseac <[email protected]>

build-constraints.yaml

@@ -8647,6 +8647,7 @@ skipped-tests:
     - quickcheck-state-machine # test: executable not found
     - streamt # executable not found
     - sandwich-contexts # assumes nix is present
+    - srtree # https://github.com/commercialhaskell/stackage/issues/7574
 
 # end of skipped-tests